What function does a fender serve when used on a vessel?

A fender serves an important protective function on a vessel by absorbing shock and preventing damage during docking or when alongside another vessel or structure. When vessels come into contact with docks, piers, or each other, the collision can cause significant damage to the hull or the structures involved. By using fenders, the impact is cushioned, reducing the likelihood of dents, scratches, or more severe structural damage.

This protective role is particularly crucial in busy port areas where there is frequent vessel traffic. The presence of fenders allows for safer mooring practices, as they create a buffer zone that helps manage the kinetic energy of the vessels.

In contrast, fenders do not increase the speed of a vessel or provide signals for docking. They also do not serve the function of securing cargo, which is typically handled by other means such as tie-downs or cargo nets. Thus, the primary and critical purpose of a fender is to mitigate the effects of contact and protect the integrity of the vessel and its surroundings.